I have a serious problem about my flash disk data. the problem is that i had scaned my 4GB flash disk through kaspersky antivirus and after scaning and treatment done by antivirus my flash disk showed no data on it but if i will see the properties of flash disk, then it shows used capacity of my data, but i cannot see or open it. I also try show file and folder option but in vain. In fact the data is available because used and free capacity shows it.

please please help me becuase i have the very improtant data on this flash disk which is not showing to work on it.